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Lecture 7

PSYC*2330 Lecture 7

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University of Guelph
PSYC 2330
Francesco Leri

Tuesday Jan 31 2012PSYC2330 Lecture 7RescorlaWagner Model Neurobiology of Prediction Surprisingness of the USpredict important events in the environments and we label the important events as USwhen one of these events occurs and tis not expected the organism will nd a predictor of that eventnding the predictor implies learning and learning occurs when you are actually in a state of surprise something happening to you thats going against your expectationRobert RescorlaAllan WagnerThe model is a mathematical expression of surpriseLearning will occur only when the subject is surprisethat is when what happens is different from what the subject expected to happenBlocking Leon Kaminthe blocking group Phase 1 condition a very strong response to the light Phase 2 the light and the tone togetherTest previous condition to light blocked condition to the tone when the tone and light are presented as a compound stimulusdont care about the tone because they know the light is the predictor of food only focused on the lightthere is no learning in phase 2 for the blocking groupThis experiment is important because it shows that1Conditioning is not an automatic result of CSUS pairings2For conditioning to occur the CS must be informative and the US surprisingCurve of Hypothetical Learning Graphs
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